<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        div{
            width: 300px;
            height: 300px;
            background-color: red;
        }
        section{
            width: 200px;
            height: 200px;
            background: green;
        }
    </style>
</head>
<body>
    <div>
        
    </div>
    <section>
        
    </section>
</body>
</html>